Bimodal Porous β-TCP Ceramics and its Dissolution in Phosphate Buffer Saline

Author(s):  
Yin Zhang ◽  
Yoshiyuki Yokogawa ◽  
Tetsuya Kameyama
2010 ◽  
Vol 36 (1) ◽  
pp. 51-56
Author(s):  
Kazuhiro Asami ◽  
Akira Inaba ◽  
Kazuhisa Ohtaguchi

Food Control ◽  
2017 ◽  
Vol 73 ◽  
pp. 1203-1209 ◽  
Author(s):  
Yuan-ting Zhu ◽  
Cheng-xiang Yang ◽  
Bin-Bin Luo ◽  
Kang Zhou ◽  
Shu-liang Liu

Author(s):  
Regiane Rodrigues dos Santos ◽  
José Roberto Viana Silva ◽  
Sonia Helena Furtado Costa ◽  
Ana Paula Ribeiro Rodrigues ◽  
Raimundo Nonato Braga Lôbo ◽  
...  

2015 ◽  
Vol 15 (2) ◽  
pp. 72-78
Author(s):  
Rini Widyastuti ◽  
Siti Darodjah Rasad

(Nuclear maturity of bovine oocyte after 24 hours ovary preservation)ABSTRACT. The objective of the research was to investigate  their meiotic competence or nuclear maturity of bovine oocytes maturity in vitro after 24 hour preservation on 5°C. Oocytes  were collected by slicing the ovaries in modified phosphate buffer saline (m-PBS). Selected cumulus-oocyte complexes (COCs) homogenous ooplasm  were cultured in maturity medium at 38°C in humidified atmosphere of 5% CO2 incubator. After 24 hours, oocytes stained for nuclear maturity’s evaluation. The proportion of oocytes at metaphase II (MII) was significantly difference (P 0.05) on oocytes that 24 hours preservated   (44.21 ± 3.04%) vs oocytes from fresh ovary (73.97 ± 9.32%) (P0.05). These results indicated that 24 hour’s preservation  bovine’s ovary on 50C  cause  decreases of nuclear oocyte maturity.


2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Mine Koruyucu ◽  
Hazal Özcan ◽  
Merve Bayram ◽  
Abdullah Burak Cankaya ◽  
Nurullah Keklikoglu ◽  
...  

Aim: Although there are many materials that can be used for retrograde filling in surgical endodontics, none of them can be regarded as an ideal material yet. The purpose of this study was to compare the surface topography of three different root-end filling materials.Methods: 36 extracted single rooted human incisor teeth were cleaned and decoronated to standardized 10 mm root lengths. The root segments were prepared and 2 mm apical resection were performed. The samples were randomly separeted to three groups (Group A: Ca(OH)2, Group B: MTA Angelus, Group C: ProRoot MTA), each comprised of 12 roots. Materials were placed as 2 mm apical barriers and obturated with guttapercha and AH-Plus sealer. Each group dimidiated two subgroups (A1,A2,B1,B2,C1,C2). Groups A1,B1,C1 were stored in normal saline (NS), groups A2,B2,C2 were stored in neutral phosphate buffer saline (NPBS) solution and samples were incubated at 370C for 2 weeks. Stereomicroscope (32X) was used to photograph the root-end filling.Results: All specimens demonstrated white crystals formation and sediment over the root-end filling materials and on the superficial border of the root-end cavities’ wall as a white plague. A2,B2,C2 samples have more crystal sediment on root-end fillings than samples A1,B1,C1. Dissolution and corrosion were observed in groups A1, A2.Conclusions: The results of this study revealed that calcium hydroxide is more resorbable than MTA Angelus and ProRoot MTA. The crystals formation and precipitation were observed in neutral phosphate buffer saline solution was more than normal saline solution for all groups as a hydroxiapatite crystals.  


Sensors ◽  
2019 ◽  
Vol 19 (2) ◽  
pp. 365 ◽  
Author(s):  
Ping Zhong ◽  
Zhisong Li ◽  
Huazheng Yang ◽  
Xin Tang ◽  
Guoxing He

This paper aims to provide an effective measurement method for the distribution of deformations and strains focusing on the response to external loading of bone-implant interfaces. To achieve this target, a novel speckle interference imaging method is proposed by introducing phosphate buffer saline medium, in which the samples were completely placed into a phosphate buffer saline solution medium to stable the water molecules. The stability of interferometry imaging is analyzed by using the concepts of co-occurrence matrix and moment of inertia. A series of experiments to measure load-driven deformation and strain in the bone-implant interface was carried out, and the experiments results were analyzed and discussed. It shows that the proposed method is feasible and effective for the no-contact strain measurements of biomaterials in a physiological condition. The proposed strain distribution sensing system will contribute to evaluating computational simulations and improving selection of implant designs and materials.


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